Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:58:18 2012 Optimize a model with 143 rows, 308 columns and 308 nonzeros Model has 284 quadratic constraints Presolve time: 1.65s Presolved: 143 rows, 308 columns, 308 nonzeros Variable types: 284 continuous, 24 integer (24 binary) Root relaxation: objective 0.000000e+00, 12 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 76.0000000 - - - 1s 0 0 0.00000 0 22 76.00000 0.00000 100% - 1s 0 0 0.50000 0 24 76.00000 0.50000 99.3% - 1s 0 0 0.50000 0 24 76.00000 0.50000 99.3% - 1s 0 2 0.50000 0 24 76.00000 0.50000 99.3% - 1s * 30 30 16 61.0000000 5.23333 91.4% 33.2 1s * 91 65 16 58.0000000 7.94762 86.3% 33.3 1s * 95 62 15 57.0000000 7.94762 86.1% 32.0 1s 3029 532 54.00000 36 181 57.00000 39.00000 31.6% 26.8 5s Explored 6505 nodes (137887 simplex iterations) in 7.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.700000000000e+01, best bound 5.700000000000e+01, gap 0.0%